DC CIRCUIT ANALYSISBasic DC TheoryClear the fraction so that we have a common denominator:4VN3 (60VN)6 (20VN)4VN1803VN1206VN13VN300VN23.077Third, find all voltage drops and currents.V1VAVN6023.07736.923 VoltsV2VN23.077 VoltsV3VBVN2023.0773.077 VoltsThe negative value for V3 shows that the current flow through R3 is opposite that which wasassumed and that the polarity across R3 is reversed.I1V1R136.923 V8W4.65 ampsI2V3R33.077 V4W0.769 ampsI3V2R223.077 V6W3.846 ampsThe negative value for I3shows that the current flow through R3is opposite that which wasassumed.Series-ParallelCircuitAnalysisWhen solving for voltage, current, and resistance in a series-parallel circuit, follow the ruleswhich apply to the series part of the circuit, and follow the rules which apply to the parallel partof the circuit. Solving these circuits can be simplified by reducing the circuit to a singleequivalent resistance circuit, and redrawing the circuit in simplified form. The circuit is thencalled an equivalent circuit (Figure 46).ES-02 Page 58 Rev. 0